CN1286424C

CN1286424C - Wand assembly for domestic appliance

Info

Publication number: CN1286424C
Application number: CNB028060199A
Authority: CN
Inventors: N·A·埃文斯
Original assignee: Dyson Ltd
Current assignee: Dyson Ltd
Priority date: 2001-03-08
Filing date: 2002-02-27
Publication date: 2006-11-29
Anticipated expiration: 2022-02-27
Also published as: US7350267B2; KR20040004599A; SG154322A1; KR20030090665A; CA2449304A1; US7168128B2; CZ20032381A3; ATE472964T1; DE60203886D1; JP2007268287A; HK1060837A1; CN1531898A; MY136147A; KR100817804B1; AU2002233553B2; JP2004100960A; EP1365676A1; US20040078925A1; RU2003129804A; TWI254625B

Abstract

A wand for a domestic appliance (e.g. vacuum cleaner) comprises a plurality of tubes (10, 20, 30, 40) which are dimensioned to telescope inside one another. Each tube (10, 20, 30, 40) is associated with a securing mechanism (15, 25, 35) for securing the tube in an extended position with respect to another of the tubes. Adjacent securing mechanisms (15, 25, 35) are positioned on their respective tubes such that, when the tubes are retracted, one securing mechanism presses against another to release the other securing mechanism. Thus, a user does not need to separately operate each securing mechanism (15, 25, 35) when extending the wand. Also, the tubes automatically secure themselves in an extended position with respect to one another. A hook (550) on the widest tube (10') cooperates with a collar (610) on the narrowest tube (40') to retain the tubes in a stored position.

Description

The clava assembly of household electrical appliance

Technical field

The present invention relates to the mirror stick-shaped element of looking in the distance that household electrical appliance are used.This stick-shaped element is used in particular for, but is not specifically designed to vacuum cleaner.

Background technology

Cylindric vacuum cleaner generally comprises the main body of dust collector that a user drags alone.This main body is equipped with separator, is used for a dirt and dust and air flow point to open.The assembly that air stream process flexible pipe and the clava of being handled by the user constitute is introduced into this main body, and burnisher then is installed in this claval far-end.This flexible pipe and clava assembly comprise that one is contained in soft long tube on the main body of dust collector and the clava of a rigidity.This clava generally has the hard tube that two joints connect as telescope each other.In this hard tube one joint is connecting handle rigidly, and another joint then is enclosed within the middle of this hard tube as telescope.Provide the retaining mechanism or the ratch mechanism of certain form fixed to one another in certain location this two joints hard tube.Make claval total length be suitable for user's body sizes (height or brachium) with such method.At US 3,083, disclose the claval example of this class in 041.

Vacuum cleaner has a trend, makes compactly more exactly, and it is convenient that it is deposited.Though many examples with dust catcher of compact main body of dust collector have been arranged, great majority also provide huge two-segment type clava in these dust catchers, are difficult to it is deposited when not using this dust catcher.From the viewpoint of packing, this claval size has often just determined to pack the minimum dimension of the required packing case of this product.

It is known that clava with three joints is provided.By the more clava of more piece number is provided, when it was folded, its total length was smaller than the clava of two joints.Yet, three joint or the clavas of more piece number more are provided, concerning the user, increased claval complexity.Particularly opening it, when it being withdrawn, losing time more, also making us more being at a loss for collection for use.

Summary of the invention

The present invention seeks to provide a kind of manipulation convenient mirror stick-shaped element of looking in the distance of getting up.

Therefore, the clava that a first aspect of the present invention provides a kind of household electrical appliance to use, this clava comprises the more piece hard tube, its size can be inserted in the middle of another root it as one of telescope, every hard tube all is equipped with fixed mechanism, be used on the position of stretching out this pipe and another root pipe being fixed up, the arrangement mode of this fixed mechanism makes that a fixed mechanism discharges another fixed mechanism when pipe is withdrawn.

The fixed mechanism of interrelated operation is provided, and when clava was shunk, the user just need not operate each single fixed mechanism separately again.So, just can provide to have the more clava of more piece number, total length is shorter when making this clava withdrawal, and can not make the user feel very complicated like that just like present clava.

Each fixed mechanism preferably can move between its latched position and off-position, and when latched position, a pipe pins another root pipe, and in the off-position, it allows relative motion between the pipe.The position of adjacent fixed mechanism on pipe separately makes that a fixed mechanism is pushed down another fixed mechanism, to discharge other fixed mechanism when pipe is withdrawn.Therefore, fixed mechanism need not be connected to each other, and also just can not cause the inconvenience on cost and the complexity, and fixed mechanism to operate in mechanically be simple associated with each otherly, also be reliable therefore.

Each fixed mechanism preferably includes a ledge, and it is positioned in the middle of the recess on the outer surface of pipe to be locked.This recess can form when Pipe forming, perhaps forms by form the hole on inner tubal wall.This ledge can be contained on the arm that is connected pipe next door.

Arm is preferably and is pivotably mounted on around this pipe.This moves ledge diametrically.But make this arm by flexible material (such as nylon), perhaps provide each arm, just can realize the rotatable installation of this arm as the separate component that can around this pipe, rotate with resilience.

The activity of fixed mechanism preferably with respect to this claval vertical axis tilt, has just been realized whereby in the fixed mechanism surface of pushing down mutually in use.

When this clava is pulled on the position of expansion, wish that also this claval fixed mechanism can automatically be fixed on claval pipe the position of expansion, in other words, in order to lock these pipes, the user need not operate fixed mechanism one by one.

Just can accomplish this point at the lasso that provides diameter to increase near the tube end place.In use, the ledge on fixed mechanism can temporarily be replaced by this lasso, thus this lasso is held and remain on fixed mechanism and the determined chamber of pipe in the middle of.Alternatively, along with pipe is pulled to the position of expansion, this ledge can itself be sat fully and put in the depression of interior pipe.This depression can be by to Pipe forming, perhaps punches on interior pipe arm and forms.

This clava is preferably loaded onto a mechanism that prevents that them from rotating mutually.Therefore, in use, the user just can be controlled at the position of clava far-end instrument.By along pipe at the ridge that a stretching, extension axially is provided, and just can realize this point along the groove that a stretching, extension axially is provided of fixed mechanism.

A kind of preferably manually operated in the middle of the fixed mechanism.Hand-operated control can be provided on the thickest pipe, and when clava was in the state of withdrawal fully, this root pipe had held other all pipes.Control section can be positioned on the clava control crank or near this handle.

One of these pipes preferably include a plurality of selective latched positions, are used for this pipe with respect to other pipe lockings.So just make the user can regulate the requirement that this claval total length is deacclimatized own health.

The thickest pipe preferably includes a handle and is in many pipes preserving the position and remains on the inner mechanism of extra heavy pipe.This can take the shape of hook, is used for keeping the lasso on tubule when these many pipes are stored.When pipe when storage location moves, this hook can automatically be operated.

The far-end of tubule preferably includes and hold the mechanism of some fixed mechanism at least when pipe is withdrawn fully, and this can take to cover the cap of fixed mechanism.

The clava that another aspect of the present invention provides a kind of household electrical appliance to use, this clava comprises many pipes, its size can make them rise as the mutual cover of telescope, each root pipe is all connecting fixed mechanism, be used for being fixed on pipe on the position of stretching, extension with respect to other pipes, the arrangement of these fixed mechanisms makes that when pipe launches each fixed mechanism is fixed on each pipe the position of launching with respect to other pipes.Therefore, for these pipes being fixed on the position of expansion, the user need not operate each fixed mechanism one by one separately.

Another aspect of the present invention provides a kind of household electrical appliance clava, this clava comprises many pipes, its size can make them be nested with as telescope is mutual, wherein the thickest pipe comprises the maintaining body of and the thinnest pipe co-operating, can remain on many pipes that are in storage location in the middle of the thickest pipe whereby.In general, make this two tubes lock on any relative position each other at the locking device on the two-tube clava.On the thickest pipe, be provided for the maintaining body that keeps many to be in the storage location pipe, make the fixed mechanism that on every pipe, can use simplification, promptly just when pipe launches fully, just lock the fixed mechanism of pipe.The effect of this maintaining body is to keep all to be in the pipe of storage location.

The thinnest pipe preferably includes a lasso, and the thickest pipe preferably includes a retaining mechanism, and this retaining mechanism has a hook, and when pipe was stored, this hook was used to remain on the lasso on tubule.

Along with pipe moves towards storage location, preferably this maintaining body is operated automatically, makes the user need not operate this maintaining body.

Preferred every pipe all links to each other with fixed mechanism, and so that pipe is fixed on respect to other pipes on the position of expansion, the far-end of the thinnest pipe comprises that covers the mechanism of some fixed mechanism at least when pipe is withdrawn fully.This protection fixed mechanism can not damage when storing.This fixed mechanism also can comprise a calyptra with longitudinal tensile strain wall, and this wall has determined to cover the cavity of fixed mechanism.

Should be appreciated that these further aspects of the present invention can to narrate/propose any feature of claim combined with other aspects of the present invention.

These devices are useful especially for cylindric or tubular dust catcher.Yet they generally also can be used for vacuum cleaner or other household electrical appliance of other types, such as carpet cleaner.

Description of drawings

Narrate embodiment of the present invention with reference to the accompanying drawings, wherein:

Fig. 1 and Fig. 2 represent to be in deployed condition according to clava of the present invention;

Fig. 3 represents to be in the clava of Fig. 1 of retracted mode;

Fig. 4 is the claval cross section by Fig. 3;

Fig. 5 is when this clava is locked in deployed condition, the section detail drawing of the clava part by Fig. 1;

Fig. 6 is the claval more detailed view of part shown in the sectional drawing of Fig. 5;

Fig. 7 is the section detail drawing by clava another part of Fig. 1;

Retaining mechanism when Fig. 8 and Fig. 9 represent to store the clava pipe of Fig. 1;

Figure 10 is the part of the retaining mechanism of presentation graphs 8 and Fig. 9 in more detail;

The another embodiment of the retaining mechanism of Figure 11 presentation graphs 8～Figure 10;

Figure 12 represents to be in the claval another embodiment that deployed condition is locked;

Figure 13 is the more detailed partial view of embodiment shown in Figure 12;

Figure 14 and Figure 15 are illustrated in the another embodiment of retaining mechanism when storing claval pipe;

Figure 16 and Figure 17 represent to have the clava at the retaining mechanism shown in Figure 14 and Figure 15;

Figure 18 is illustrated in Figure 16 of the state of withdrawing fully and locking and the clava of Figure 17;

Figure 19 and Figure 20 indicate to enter the clava pipe of locking state in more detail; And

Figure 21 represents another interchangeable embodiment of clava fixed mechanism.

The specific embodiment

This clava shown in Fig. 1 to 4 comprises the

pipe

20,30 and 40 that three joints separate, and its diameter dwindles successively, can be enclosed within another inside as one of telescope.This three-joint pipe is regained to put into and is stored in the middle of the sleeve pipe 10.Handle 12 links to each other with storage sleeve pipe 10, allows the user can handle this clava.Flexible pipe 18 stretches out from a joint 16 that stores sleeve pipe 10, is connected on the pipe by swivel 17.

Pipe

20,30 and 40 can one slides in the middle of another root, they can move between storage location (as shown in Fig. 3 and Fig. 4) and expanded position (as shown in Figures 1 and 2), a pipe stretches out from another root pipe, makes these pipes have only an end to overlap each other.Fig. 4 is the section along the A-A line of Fig. 3, demonstrates the position that these pipes are withdrawn in storing sleeve pipe 10 fully.

Pipe

20,30 and 40 diameter are tapered, and length is elongated gradually.The selection of the length of every pipe makes that when fixed mechanism 25,35 was close to placement each other, it can occupy the effective length that stores sleeve pipe 10 fully.

The far-end of pipe 40 is suitable for connecing in any known mode puts the floor tool (not shown).Can link to each other with pipe 40 with sleeve pipe or with any other suitable mechanism by means of interference fit, connection bayonet fittings, hasp joint, threaded ferrule such as floor tool.Also can replace floor tool to be fixed on the pipe 40 with accessory tool.

Fixed

mechanism

15,25 and 35 can be locked pipe mutually as required when these pipes are in as illustrated in fig. 1 and 2 expanded position, perhaps when these pipes are withdrawn into storage location shown in Fig. 3 and 4, make their free of one another moving as required.Provide a fixed mechanism 15 storing on the sleeve pipe 10, be used for a pipe 20 to be fixed on and to store on the sleeve pipe 10.Far-end at pipe 20 provides another fixed mechanism 25, pipe 20 is fixed on the pipe 30, and provides another fixed mechanism 35 at the far-end of pipe 30, and pipe 30 is fixed on the pipe 40.

Fig. 5 is shown in more detail in the fixed mechanism 25 on the pipe 20, and Fig. 6 demonstrates fixed mechanism 25 and pipe 20 terminal another views.The working method of the fixed mechanism 35 on pipe 30 is same.Fixed mechanism 25 comprises an annulus 250 that is engaged in pipe 20 outsides.First annulus 251 of this annulus 250 stretches out and forms opening from the tip forward of pipe 20, and the diameter of this opening is thinner than the diameter of pipe 20 itself, and annulus 250 can be located on pipe 20.Though the diameter in annulus 251 upper sheds is thinner than pipe 20, it is enough to hold pipe 30.This first annulus 251 has a surface that turns forward 252.The axial rearward end of first annulus 251 is second annulus 253.This second annulus 253 includes a plurality of arms (generally being expressed as 259 in Fig. 6), and they link to each other with first annulus 251, are axially stretching out backward.Between each arm 259, be arcuation part 258, they are engaged in the outer surface next door of pipe 20.Arcuation part 258 is also connecting first annulus 251, and is axially stretching out backward, and its distance of stretching out is shorter than the distance that arm 259 stretches out.These arcuation parts 258 and arm 259 are separated by narrow slit 257 on circumference.Demonstrate 3 arms 259 on the figure, have now found that this is preferred minimal amount, but provide the arm 259 of other numbers also to be fine.

Fixed mechanism 25 also has one group of ledge 265.This is to be arranged in the parts that corresponding hole 264 is used to keep on the pipe 20.The end of pipe 30 comprises a lasso 310, and its diameter increases with respect to the diameter of lasso left side pipe 30 remainders.As shown in FIG. 5, lasso 310 can be by strengthening the thickness of pipe, and perhaps in the position that needs lasso, the ring of fixing other material makes Pipe forming and obtains around pipe.On each pipe joint, provide a seal 260 to be used for sealing between the pipe.Seal 260 is positioned at an end of pipe 30, is fixed on the inner surface of this pipe.Seal can be gluedd joint or be clamped in place.At this last annulus 312 that demonstrates pipe 30, have the diameter identical with lasso 310.Be preferred like this, because this part 312 is pressed on the adjacent wall of pipe 20, its effect is to make pipe stable, it can also make seal 260 support the inwall of more close pipe 20.Yet annulus 312 can have identical diameter with the remainder of pipe 30.

Each arm 259 has at the ledge 254 that radially inwardly stretches out, and it is stretched in the hole 263 on pipe 20 walls.When

pipe

20,30 was in latched position as shown in the figure, this ledge 254 also was arranged in the sunk part 314 that forms on the pipe 30, made

pipe

20 and 30 is locked together.Arm 259 also has the part 255 of radially outward stretching out, and this part has an inclined surface 256.The material of making fixed mechanism has enough elasticity, makes that arm 259 and ledge 254 can be outwardly-bent and can not rupture when being returned to the position that shows on the figure.The effect of lasso 310 is that pipe 30 is remained on pipe 20 centres, and this moment, it was trapped between annulus 251 and the ledge 254.The diameter of annulus 314 is littler than lasso, provides a depression to hold the ledge 254 of fixed mechanism.For

pipe

20 and 30 is discharged, arm 259 is crooked radially outward, rotates around annulus 251.So just make ledge 254 break away from the sunk part 314 of pipe and the outside of lasso 310.The inner surface 266 of each arm 259 has recessed section configuration, allows the user be easy to catch like this, and this should be very necessary.

This seal 260 axially and is radially all reaching the pipe outside, makes it possible to seal the inner surface of thicker pipe 20.Pipe 20 is in the part of axial least significant end, and its diameter is narrower than the remainder of pipe, and seal 260 just can be engaged on the inner surface of pipe 20 well like this.Diameter is shown as part 220 on the pipe to the situation of thinner end diameter transition.

Fig. 7 shows in greater detail out at the fixed mechanism that stores on the sleeve pipe 10 to Fig. 9.For the sake of clarity, only demonstrate release snap ring 15 and pipe 20 (pipe that snap ring 15 is played a role).Discharge snap ring 15 and comprise a ring-shaped article 155, it has a part 151, stretches out towards storing sleeve pipe 10 housings outside, can manual operations this part snap ring is discharged.Discharge snap ring 15 and be stored sleeve pipe 10 and support (not shown)s, make it can with the perpendicular plane of the longitudinal axis of pipe 10 on move.The action part of snap ring 15 is projections 152, and it radially inwardly stretches out from ring-shaped article 155.As shown in FIG. 9, when pipe 20 was pulled out from store sleeve pipe 10 fully, projection 152 was arranged in the groove 156 on pipe 20 outer surfaces, and its effect is that pipe is locked on this position.Adapt at breach on the projection 152 154 and the ridge 22 that is positioned on the pipe 20, its effect is to prevent that pipe from reversing with respect to other pipes.The foremost portion that stores sleeve pipe 10 has a plane inclined 102, and the diameter of this part is thinner than pipe 10, also than the lasso 110 thin (similar with above-mentioned lasso 310) of pipe 20.Therefore, lasso 110 can not be pulled out from store sleeve pipe 10.The effect on inclined-plane 102 is when pipe is got up by condensation, opens fixed mechanism 25, will narrate this point more fully below.Seal 210 is

pipe

20 and 10 sealings of storage sleeve pipe.

Do not twist mutually between the preferred pipe.As mentioned above, provide axially extended ridge 22 along the outer surface of every

pipe

20,30 and 40, every fixed mechanism all has the groove that adapts with this ridge (Fig. 6 267).In use, along with pipe slides in another root pipe, this ridge 22 also slides in the middle of groove 267, but this groove 267 has avoided any rotation between the pipe to move.Ridge 22 can be along with pipe while extrusion moulding.

This clava preferably can be adjusted on different total lengths, and making has the user of different body sizes (height, brachium) can very cosily use this clava.In order to address that need, as shown in Figure 11, a plurality of selectable latched positions 230 are provided for pipe 20 topmost.These latched positions can be the breach 230 on the ridge 22 of the length extending of pipe 20.Embodiment hereto, discharging snap ring 15 does not have as shown in Figure 10 breach 154.Thereby projection 152 is continuous, makes in the middle of the breach 230 be positioned at latched position it is on one.This will allow the pipe 20 can be some with respect to storing sleeve pipe 10 different positions fixed tube 20 of locking.

Pipe

10,20,30,40 can use the metal manufacturing, such as with steel or aluminium, even use the duroplasts manufacturing, and pipe is preferably by the material manufacturing of constant thickness, by obtain above-mentioned ridge and groove to Pipe forming.This has the advantage that reduces end article weight as far as possible.

In the above-described embodiment, by elastic soft material,, make

fixed mechanism

15,25,35 such as nylon.Yet, by each part arm 259 is made discrete part, between the remainder of every arm 259 and fixed mechanism 25, provide a rotating shaft, also can make arm 259 carry out same rotation and move.Between arm and pipe, perhaps mounting spring just can realize the elasticity of arm 259 between the standing part of arm and fixed mechanism.

Though above-mentioned embodiment is shown as the part that separates with pipe to fixed mechanism 25,35, fixed mechanism also can be made one with pipe.Can be around metal tube molding (or in addition moulding) go up the fixed mechanism of plastics, perhaps with the fixed mechanism of plastic tube molding (or moulding in addition) plastics.

The following describes claval operation.In order to launch this clava, the user catches handle 12 to control and stores sleeve pipe 10, from store sleeve pipe 10 along axially pulling out the thinnest pipe 40.Each

pipe

20,30 and 40 outwards slides from store sleeve pipe 10.The order that pipe skids off from store sleeve pipe 10 is by the size decision of the frictional force that exists between the pipe, and this is inessential in proper order.Along with each root pipe reach expanded position with respect to other pipes (such as, along with pipe 30 slides to as shown in FIG. 5 the position with respect to pipe 20),

pipe

20,30 with regard to automatic locking on this position.With reference to figure 5, along with inclined surface 256 by frame on the lasso on the pipe 30 310, the projection 254 of fixed mechanism 25 is forced outwardly diametrically.Projection 254 itself is sat the depression 314 that places on the pipe 30 then.The annulus 251 that is adjacent to the fixed mechanism of lasso 310 makes pipe 30 avoid any further slip.Lasso 310 vertically all can not move at two regularly between the vertical plane that is held in this annulus 251 and projection 254 now.Therefore, pipe 30 just is lockable with respect to pipe 20 now.Seal 260 seals up the part that inwardly has tapering 220 of pipe 20.When arriving full extended position, pipe 40 is lockable in a similar fashion with respect to pipe 30.In case all pipes all pin, this clava just can be prepared to have used.Should be appreciated that each root pipe all is automatically to be locked on the position of expansion, need not the user operate in the fixed mechanism on the every pipe respectively.

Narrate the operation sequence of clava withdrawal below.The user at first operates in the release snap ring 15 that stores on the sleeve pipe 10.This will discharge snap ring from pipe 20.The user shifts to the far-end of pipe 40 in the axial direction and stores sleeve pipe 10.This can cause that pipe 20 slides in storing sleeve pipe 10.In case pipe 20 shrinks to advance to store in the sleeve pipe 10 fully, fixed mechanism 25 just promotes to store the leading edge 102 (as shown in FIG. 7) on the sleeve pipe 10, causes that the arm of fixed mechanism 25 is outwardly-bent diametrically, and pipe 30 is discharged from pipe 20.Pipe 30 can store in the sleeve pipe in retraction then, promotes fixed mechanism 25 until fixed mechanism 35.As the front, this arm that causes fixed mechanism is outwardly-bent diametrically, makes pipe 40 discharge from pipe 30.Along with the user continues to promote pipe 40, pipe 40 also can store in the sleeve pipe 10 in retraction, and this clava just shrinks fully.Realize claval complete retraction with a continuous and fast action, need not the user operate each fixed mechanism 25 and 35 respectively.

Similar view shown in Figure 12 and Figure 13 use and Fig. 5 and Fig. 6 is represented this claval another embodiment.As described in front, pipe 20 ' and 30 ' is represented two joints that this clava is adjacent.Main in this embodiment is not both, the lasso 310 of the pipe 30 among Fig. 5 is replaced by an inclined surface 470 of pipe 30 ', and the projection 254 among Fig. 5 is had projection 454 replacements that radial development is faced directly in both sides, rather than on an one side inclined surface 256 is arranged.One of this alternative arrangement mode and front have been realized same function in the following areas, and promptly along with pipe 30 ' launches to latched position, projection 454 is radially outward moving.At this, the inclined surface 470 and projection 454 co-operatings of pipe 30 ' have realized that this moves.Figure 19 and Figure 20 have compared this two embodiments in more detail.

In embodiment as shown in figure 12, also have several other differences.Pipe 30 ' has the hole 414 of extrusion in the above, rather than the groove of moulding on outer tube surface.Have found that this is more easy for manufacturing.Compensate for pipe 30 ' is had this situation of hole on its outer wall, seal 460 further stretches in the vertical and enters pipe 30 '.Can see that the penetrale of seal 460 is in connection with the inwall of the inclined surface 470 of pipe 30 ', and the outermost portion 462 of seal 460 is also in connection with the inwall of pipe 20 '.In use, when pipe was locked, projection 454 itself takes a seat put in hole 414.Just avoided pipe 30 ' any moving on vertically by means of the sagittal plane of projection 454.Compare with foregoing arrangement mode, have found that more certain indication that such arrangement mode provides relevant pipe whether to be lockable to the user.

Figure 14 and Figure 15 demonstrate another fixed mechanism 500 that is used to store sleeve pipe 10, store sleeve pipe at this and are expressed as 10 '.Figure 14 demonstrates with respect to storing sleeve pipe 10 ' and is in expansion and the thickest pipe 20 ' of latched position.This retaining mechanism 500 comprises an executive item 510 and a locking lever 560.Executive item 510 is articulated on the pivot 520 that stores sleeve pipe 10 ', and locking lever 560 is articulated on the pivot 540 on the another part that stores sleeve pipe 10 '.Executive item 510 has a rib 515, be pressed on the inclined surface 535 of locking lever 560, in use, executive item 510 moves along inclined surface 535 along the mobile rib 515 that causes of 580 directions, causes that on the direction shown in 585 locking lever 560 rises or descends.Projection 530 on the locking lever 560 is sat in the depression 590 of putting on pipe 20 ' wall, is used to lock the position of pipe 20 '.Operation executive item 510 just makes projection 530 raise from its position of sitting, and this just makes pipe 20 ' indentation.Locking lever 530 also has a hook 550, and it can remain on lasso 610 on the block 600 on the pipe 40 ' far-end (as Figure 16 and Figure 17).When whole pipes when all indentation stores in the middle of the sleeve pipe 10 ', block is combined in the end that stores sleeve pipe 10 ', and this hook 550 just hooks lasso 610.Thereby before operation executive item 551 discharged hook 550, all pipe 20 ', 30 ', 40 ' all was firmly held in and stores in the middle of the sleeve pipe 10 '.The leading edge of hook 550 comprises an inclined surface 551, stores in the sleeve pipe 10 ' along with pipe is retracted into, and this inclined surface is moved by lasso 610.This just makes this hook automatically on lasso 610, therefore along with pipe moves (shown on Figure 18) to storage location, just maintains block 600.Should be appreciated that, the part of lasso 610 as pipe 40 ' can be provided, rather than the part of the connector 600 of conduct separation.When storage location, whole fixed mechanisms of each joint of block 600 and other are suitable, just can protect them to avoid damaging like this in the process that stores.

Above-mentioned locking configuration can be worked with the same mode of the configuration that shows in Figure 11, pipe 20 ' is locked on the position of various expansion.To provide one group in the top of pipe 20 ' as in Figure 14, being expressed as 590 locking depression.By on the ridge 595 that on the length of pipe 20 ', stretches, engraving some breach 590 again, just can provide these latched positions.

Figure 21 represents pipe another different embodiments with fixed mechanism.At this, the arm 259,459 of preceding several embodiments can be replaced at the locking part 700 that moves radially.Locking part 700 is engaged in the rib 745 that pipe 20 ' annulus 740 on every side stretches out backward and controls.A spring 750 is between this rib 745 and locking part 700, and its effect is to apply bias voltage to locking part 700 to make it push down pipe 30 '.The working method of this embodiment with narrate previously identical, without user's manual operations, just can automatically take latched position and off-position.In use, the inclined lead edge 741 of lasso 740 will be pressed on the inclined surface 710 of adjacent retaining mechanism on the retaining mechanism, and pipe is discharged automatically.The locking part 700 that shows has square projection 720, but can have inclined surface as shown in Figure 19.

Shown in the accompanying drawings clava all has the pipe that three joints separate, but should be appreciated that except storing sleeve pipe, such clava can have only two joints or more than three pipes that save.The tube coupling that has more should have in the fixed mechanism of 25,35 same-types shown in the illustrated embodiment.Though handle is shown as a part that stores sleeve pipe, this handle can be to be engaged in the ancon pipe that stores the boot proximal end inboard, to replace in the section 16 shown in Fig. 1.

Claims

1. household electrical appliance clava, this clava comprises many pipes, its size makes it possible in the middle of one of telescope is inserted in another root, every pipe is connecting a fixed mechanism, this fixed mechanism can be fixed on pipe on the position of expansion with respect to its adjacent pipe, can also discharge a pipe is slided as telescope in an other pipe, the configuration of this fixed mechanism makes when pipe is withdrawn fully, fixed mechanism is placed adjacent to each other, it is characterized in that, when each pipe withdrawal, each fixed mechanism is discharged by adjacent fixed mechanism.

2. clava as claimed in claim 1, wherein each fixed mechanism can both move between latched position and off-position, in latched position, it pins pipe and adjacent pipe, and in the off-position, it allows moving between each pipe, adjacent fixed mechanism is positioned on the adjacent pipe, make that a fixed mechanism is pushed down another fixed mechanism, makes other fixed mechanism move to the off-position when each pipe withdrawal.

3. clava as claimed in claim 2, wherein this fixed mechanism has a surface of pushing down another fixed mechanism in use, and this surface makes that with respect to claval vertical axis tilt this fixed mechanism is able to move between latched position and off-position.

4. as the clava of claim 2 or 3, wherein each fixed mechanism comprises a projection, and when latched position, it is positioned in the middle of the depression on the adjacent pipe outer surface.

5. clava as claimed in claim 4, wherein an arm on this pipe next door has this projection, and this arm can move by pushing down adjacent fixed mechanism.

6. clava as claimed in claim 5, wherein this arm be pivotably mounted on this pipe around, this projection can move radially.

7. clava as claimed in claim 4, a plurality of arms are wherein distributing round pipe compartment of terrain on circumference.

19. clava as claimed in claim 1, wherein in this fixed mechanism can fix this clava on any position in the different extended position scopes.

20. as the clava of claim 19, wherein in these many pipes comprises that this ridge has a plurality of breach along its length along the vallate of this pipe in axial stretching, extension, this fixed mechanism comprises sits the projection that places a selected breach.

21. clava as claimed in claim 1, wherein the thickest pipe comprise many pipes that are in storage location are remained on maintaining body in the middle of extra heavy pipe.

22. clava as claim 21, wherein the thinnest pipe comprises a lasso, and the thickest pipe comprises a retaining mechanism, and this retaining mechanism has a maintaining body, can when all being in storage location, these many pipes remain on this lasso on tubule; Described maintaining body is a hook.

23. as the clava of claim 21 or 22, wherein along with these many pipes move towards storage location, this maintaining body is automatically operated.

24. clava as claimed in claim 1, wherein the far-end of tubule is included in the mechanism that is used to cover a part of fixed mechanism when clava is withdrawn fully.

25. clava as claimed in claim 1, wherein the configuration of this fixed mechanism also makes, when this clava launches, each fixed mechanism automatically will be in each pipe of expanded position and adjacent pipe is fixed up.

26. as the clava of claim 25, wherein each fixed mechanism comprises a projection that can move towards latched position, in latched position, this projection is positioned in the middle of the depression on the adjacent pipe outer surface.

27. clava as claim 26, wherein each root adjacent pipe comprises a lasso that increases near its terminal diameter, this pipe and fixed mechanism are determined a chamber that is used to hold the adjacent pipe lasso, when this clava when move the position of launching, the lasso of pipe can temporarily move this projection, makes lasso be received and remains in the middle of this chamber.

28. as the clava of claim 25, wherein this fixed mechanism or pipe have along with this pipe changes to expanded position and can make the temporarily mobile inclined surface of fixed mechanism.

29. clava as claimed in claim 1, wherein this fixed mechanism is positioned on the outer wall of each pipe.

30. clava as claim 25, wherein each fixed mechanism comprises a projection, each root adjacent pipe comprises a lasso that increases near its terminal diameter, this pipe and fixed mechanism are determined a chamber that is used to hold the adjacent pipe lasso, when this clava when move the position of launching, the lasso of pipe can temporarily move this projection, makes lasso be received and remains in the middle of this chamber.

31. clava as claimed in claim 1, its form are the cleaning rods that is used for dust catcher.

32. household electrical appliance, it has adopted as any described clava among claim 1-3,11-14,16-22, the 24-31.